IIRC when I tried it, it worked: Is that the bonus disc for Pokemon Collosseum, in PAL? If I can find it, I could try it out
(I have the v16 demo disc too for NTSC-U, and Pokemon Collosseum NTSC-U)
EDIT: Oooh, it's a cart. Welp.
If anyone wishes to borrow my UK Ruby cart (I tried fixing the battery and ended up taking half the trace off, so no battery easily ;P), they can do so c: